Variable Primary Flow (VPF) Pumping Systems

Optimize energy use and simplify your chiller plant.
VPF systems use a single set of variable-speed pumps to serve both chillers and building loads, eliminating the need for separate primary/secondary loops. This streamlined design reduces installation cost, saves pump energy, and improves part-load efficiency—ideal for modern buildings with variable-flow chillers.

How It Works:
A single pump loop varies flow based on real-time cooling demand. Specialized controls and valves ensure chillers always receive their minimum required flow, protecting equipment while allowing the system to adapt efficiently.

Key Benefits:

• Lower energy use – Pumps slow down at part load, cutting power consumption significantly.

• Reduced complexity – Fewer pumps, pipes, and valves compared to primary-secondary systems.

• Space savings – Compact design frees up mechanical room space.

• Improved control – Modern sequences allow seamless chiller and pump staging.

Why It Works for Malaysia:

• Matches the part-load profile of tropical buildings.

• Supports GBI/Green Building certification with measurable energy savings.

• Compatible with today’s variable-speed chillers and intelligent BMS integration.

EKG’s VPF Services:

• Design review & system selection

• Commissioning & flow verification

• Control tuning & chiller protection setup

• Retrofit planning from primary-secondary to VPF

Simplify your plant, maximize savings.
Upgrade to a smarter, more efficient pumping strategy.

Contact EKG Malaysia to design, install, or optimize your Variable Primary Flow system.